SIFT BEARING STORE CATALOG

49576/49520TimkenTapered Roller

49576/49520 is a Timken tapered roller bearing, bore 44.45 mm, O.D. 101.6 mm, width 31.75 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly
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Bore d44.45mm
Outside dia. D101.6mm
Width B31.75mm
Dynamic Cr157kN
Static C0r155kN
Weight1.25kg
Cr / C0r1.01
Mean dia. dm73mm

Original catalogue drawing - Timken TRB Catalog, page 176

49576/49520 Timken Tapered Roller bearing catalogue drawing

Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.

Scale cross-section

DdBOutside dia. D101.6 mmBore d44.45 mmWidth B31.75 mmCup width C25.4 mm

Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own dimensions for selection reference only - not a manufacturing or assembly drawing.

Dimension table (mm / inch)

SymbolDimensionmminch
dBore diameter44.451.75
DOutside diameter101.64
BInner-ring / bearing width31.751.25
TOverall assembly width31.751.25
CCup / outer-ring width25.41
rChamfer (min)3.30.1299

Notes

Tapered roller bearings are cone / cup assemblies; cone and cup weights are listed separately and the total is their sum. Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.

Main dimensions

Bore d (mm)44.450
Bore d (in)1.7500
Outside dia. D (mm)101.600
Outside dia. D (in)4.0000
Width B (mm)31.750
Overall width T (mm)31.750
Overall width T (in)1.2500
Cup width C (mm)25.400

Load ratings & speeds

Basic dynamic load rating Cr (lbs)35400
Basic static load rating Cor (lbs)35000
Basic dynamic load rating Cr (N)157000
Basic static load rating C0r (N)155000
Dynamic rating C1 (N, ISO)157000
Dynamic rating C1 (lbf, ISO)35400
Radial rating C90 (N)40800
Radial rating C90 (lbf)9170
Thrust rating Ca90 (N)28000
Thrust rating Ca90 (lbf)6290
Static rating C0 (N)155000
Static rating C0 (lbf)35000
Factor e0.40
Factor Y1.50
Factor K1.46
Geometry factor G149.1
Geometry factor G216.8
Geometry factor Cg0.0946
Effective load centre a (mm)-7.1

Weight

Weight (kg)1.25
Cone weight (kg)0.86
Cup weight (kg)0.38
Total weight (kg)1.24

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)0.8
Housing fillet r max (mm)3.3
Shaft shoulder da (mm)54.0
Shaft shoulder db (mm)55.0
Housing shoulder Da (mm)96.0
Housing shoulder Db (mm)88.0
Cage projection Aa (mm)2.3
Cage projection Ab (mm)1.4

Bearing life (ISO 281 basic rating life)

C / PEquivalent load P (N)L10 (106 rev)L10h at 500 rpm
439,2501023,386
626,16739213,083
819,6251,02434,133
1015,7002,15471,814
1510,4678,323277,449

Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 157,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.

Source & traceability

BrandTimken
Source catalogueTimken Tapered Roller Bearing Catalog (2016)
Catalogue pagep.176 (dimensions) / p.97 (cone) / p.97 (cup)
Series typeTS

ISO dynamic rating C1, Timken C90 / Ca90, static rating C0, geometry factors and assembly weight.

Interchange - same dimensions, other brands

DesignationBrandTypedDB/TDyn. ratingkg
K49576-49520FAGTapered Roller44.45101.631.75108 kN1.27

Nearby bore sizes

DesignationBrandTypedDB/TDyn. ratingkg
12175/12303TimkenTapered Roller44.4576.9917.1449.5 kN0.31
13175/13318TimkenTapered Roller44.4580.9617.4650.8 kN0.39
13176D/13318TimkenTapered Roller44.4580.9631.7588.5 kN0.74
17884/17830TimkenTapered Roller44.4579.3833.55-0.52
18685/18620TimkenTapered Roller44.4579.3817.4652 kN0.34
18685/18620DTimkenTapered Roller44.4579.3841.2790.6 kN0.78
25580/25518TimkenTapered Roller44.4581.9725.4-0.53
25580/25519TimkenTapered Roller44.4582.5525.490.5 kN0.55

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